필름과 비디오의 MTF 비교

• 영문명: Comparison of MTF between Film and HD
• 발행기관: 한국영화학회
• 저자명: 문원립
• 간행물 정보: 『영화연구』제24호, 125~142쪽, 전체 18쪽
• 주제분류: 예술체육 > 예술일반
• 파일형태: PDF
• 발행일자: 2004.12.31

영문 초록

The modulation transfer function (MTF) of motion picture film was compared to that of HDCAM camera. On the film side, the various steps from camera negative to print film are added using published documents from Kodak. On the HDCAM side, a study from Sony Corp. was consulted. The result of the comparison agrees with the previous study. HDCAM showed much better response at lower spatial frequencies, and film showed much better response at higher frequencies. The present study, however, gave a little better result for film than the previous one. In view of the technical complexity regarding MTF, the author also tried to explain the basic concepts in some detail for general film students. Particularly, the concept of “TV line” was clarified since errors are frequently found even in professional publications. The problem appears to stem from confusion of sampling frequency and image frequency.

목차

1. 모듈레이션 전달함수(Moudulation Transfer Function, MTF)

2. 점확산함수

3. 비디오의 MTF

4. 35㎜ 영화와 HD

키워드

modulation transfer MTF 35mm film HDCAM TV line